git.sesse.net Git - vlc/blob - modules/mux/avi.c

   1 /*****************************************************************************
   2  * avi.c
   3  *****************************************************************************
   4  * Copyright (C) 2001-2009 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 /* TODO: add OpenDML write support */
  28
  29
  30 #ifdef HAVE_CONFIG_H
  31 # include "config.h"
  32 #endif
  33
  34 #include <vlc_common.h>
  35 #include <vlc_plugin.h>
  36 #include <vlc_sout.h>
  37 #include <vlc_block.h>
  38 #include <vlc_codecs.h>
  39 #include <vlc_bits.h>
  40
  41 /*****************************************************************************
  42  * Module descriptor
  43  *****************************************************************************/
  44 static int  Open   ( vlc_object_t * );
  45 static void Close  ( vlc_object_t * );
  46
  47 #define SOUT_CFG_PREFIX "sout-avi-"
  48
  49 #define CFG_ARTIST_TEXT     N_("Artist")
  50 #define CFG_DATE_TEXT       N_("Date")
  51 #define CFG_GENRE_TEXT      N_("Genre")
  52 #define CFG_COPYRIGHT_TEXT  N_("Copyright")
  53 #define CFG_COMMENT_TEXT    N_("Comment")
  54 #define CFG_NAME_TEXT       N_("Name")
  55 #define CFG_SUBJECT_TEXT    N_("Subject")
  56 #define CFG_ENCODER_TEXT    N_("Encoder")
  57 #define CFG_KEYWORDS_TEXT   N_("Keywords")
  58
  59 vlc_module_begin ()
  60     set_description( N_("AVI muxer") )
  61     set_category( CAT_SOUT )
  62     set_subcategory( SUBCAT_SOUT_MUX )
  63     set_capability( "sout mux", 5 )
  64     add_shortcut( "avi" )
  65
  66     add_string( SOUT_CFG_PREFIX "artist", NULL,    CFG_ARTIST_TEXT, NULL, true )
  67     add_string( SOUT_CFG_PREFIX "date",   NULL,    CFG_DATE_TEXT, NULL, true )
  68     add_string( SOUT_CFG_PREFIX "genre",  NULL,    CFG_GENRE_TEXT, NULL, true )
  69     add_string( SOUT_CFG_PREFIX "copyright", NULL, CFG_COPYRIGHT_TEXT, NULL, true )
  70     add_string( SOUT_CFG_PREFIX "comment", NULL,   CFG_COMMENT_TEXT, NULL, true )
  71     add_string( SOUT_CFG_PREFIX "name", NULL,      CFG_NAME_TEXT, NULL, true )
  72     add_string( SOUT_CFG_PREFIX "subject", NULL,   CFG_SUBJECT_TEXT, NULL, true )
  73     add_string( SOUT_CFG_PREFIX "encoder",
  74                 "VLC Media Player - " VERSION_MESSAGE,
  75                                                    CFG_ENCODER_TEXT, NULL, true )
  76     add_string( SOUT_CFG_PREFIX "keywords", NULL,  CFG_KEYWORDS_TEXT, NULL, true )
  77
  78     set_callbacks( Open, Close )
  79 vlc_module_end ()
  80
  81
  82 /*****************************************************************************
  83  * Local prototypes
  84  *****************************************************************************/
  85 static int Control( sout_mux_t *, int, va_list );
  86 static int AddStream( sout_mux_t *, sout_input_t * );
  87 static void DelStream( sout_mux_t *, sout_input_t * );
  88 static int Mux      ( sout_mux_t * );
  89
  90 typedef struct avi_stream_s
  91 {
  92     int i_cat;
  93
  94     char fcc[4];
  95
  96     mtime_t i_duration;       // in µs
  97
  98     int     i_frames;        // total frame count
  99     int64_t i_totalsize;    // total stream size
 100
 101     float   f_fps;
 102     int     i_bitrate;
 103
 104     VLC_BITMAPINFOHEADER    *p_bih;
 105     WAVEFORMATEX            *p_wf;
 106
 107 } avi_stream_t;
 108
 109 typedef struct avi_idx1_entry_s
 110 {
 111     char     fcc[4];
 112     uint32_t i_flags;
 113     uint32_t i_pos;
 114     uint32_t i_length;
 115
 116 } avi_idx1_entry_t;
 117
 118 typedef struct avi_idx1_s
 119 {
 120     unsigned int i_entry_count;
 121     unsigned int i_entry_max;
 122
 123     avi_idx1_entry_t *entry;
 124 } avi_idx1_t;
 125
 126 struct sout_mux_sys_t
 127 {
 128     bool b_write_header;
 129
 130     int i_streams;
 131     int i_stream_video;
 132
 133     off_t i_movi_size;
 134     avi_stream_t stream[100];
 135
 136     avi_idx1_t idx1;
 137     off_t i_idx1_size;
 138
 139 };
 140
 141 #define HDR_BASE_SIZE 512 /* single video&audio ~ 400 bytes header */
 142
 143 /* Flags in avih */
 144 #define AVIF_HASINDEX       0x00000010  // Index at end of file?
 145 #define AVIF_ISINTERLEAVED  0x00000100
 146 #define AVIF_TRUSTCKTYPE    0x00000800  // Use CKType to find key frames?
 147
 148 /* Flags for index */
 149 #define AVIIF_KEYFRAME      0x00000010L /* this frame is a key frame.*/
 150
 151
 152 static block_t *avi_HeaderCreateRIFF( sout_mux_t * );
 153 static block_t *avi_HeaderCreateidx1( sout_mux_t * );
 154
 155 static void SetFCC( uint8_t *p, char *fcc )
 156 {
 157     memcpy( p, fcc, 4 );
 158 }
 159
 160 /*****************************************************************************
 161  * Open:
 162  *****************************************************************************/
 163 static int Open( vlc_object_t *p_this )
 164 {
 165     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 166     sout_mux_sys_t  *p_sys;
 167
 168     msg_Dbg( p_mux, "AVI muxer opened" );
 169
 170     p_sys = malloc( sizeof( sout_mux_sys_t ) );
 171     if( !p_sys )
 172         return VLC_ENOMEM;
 173     p_sys->i_streams = 0;
 174     p_sys->i_stream_video = -1;
 175     p_sys->i_movi_size = 0;
 176
 177     p_sys->idx1.i_entry_count = 0;
 178     p_sys->idx1.i_entry_max = 10000;
 179     p_sys->idx1.entry = calloc( p_sys->idx1.i_entry_max,
 180                                 sizeof( avi_idx1_entry_t ) );
 181     if( !p_sys->idx1.entry )
 182     {
 183         free( p_sys );
 184         return VLC_ENOMEM;
 185     }
 186     p_sys->b_write_header = true;
 187
 188
 189     p_mux->pf_control   = Control;
 190     p_mux->pf_addstream = AddStream;
 191     p_mux->pf_delstream = DelStream;
 192     p_mux->pf_mux       = Mux;
 193     p_mux->p_sys        = p_sys;
 194
 195     return VLC_SUCCESS;
 196 }
 197
 198 /*****************************************************************************
 199  * Close:
 200  *****************************************************************************/
 201 static void Close( vlc_object_t * p_this )
 202 {
 203     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 204     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 205
 206     block_t       *p_hdr, *p_idx1;
 207     int                 i_stream;
 208
 209     msg_Dbg( p_mux, "AVI muxer closed" );
 210
 211     /* first create idx1 chunk (write at the end of the stream */
 212     p_idx1 = avi_HeaderCreateidx1( p_mux );
 213     p_sys->i_idx1_size = p_idx1->i_buffer;
 214     sout_AccessOutWrite( p_mux->p_access, p_idx1 );
 215
 216     /* calculate some value for headers creations */
 217     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 218     {
 219         avi_stream_t *p_stream;
 220
 221         p_stream = &p_sys->stream[i_stream];
 222
 223         p_stream->f_fps = 25;
 224         if( p_stream->i_duration > 0 )
 225         {
 226             p_stream->f_fps = (float)p_stream->i_frames /
 227                               ( (float)p_stream->i_duration /
 228                                 (float)1000000 );
 229         }
 230         p_stream->i_bitrate = 128 * 1024;
 231         if( p_stream->i_duration > 0 )
 232         {
 233             p_stream->i_bitrate =
 234                 8 * (uint64_t)1000000 *
 235                     (uint64_t)p_stream->i_totalsize /
 236                     (uint64_t)p_stream->i_duration;
 237         }
 238         msg_Info( p_mux, "stream[%d] duration:%"PRId64" totalsize:%"PRId64
 239                   " frames:%d fps:%f KiB/s:%d",
 240                   i_stream,
 241                   (int64_t)p_stream->i_duration / (int64_t)1000000,
 242                   p_stream->i_totalsize,
 243                   p_stream->i_frames,
 244                   p_stream->f_fps, p_stream->i_bitrate/1024 );
 245     }
 246
 247     p_hdr = avi_HeaderCreateRIFF( p_mux );
 248     sout_AccessOutSeek( p_mux->p_access, 0 );
 249     sout_AccessOutWrite( p_mux->p_access, p_hdr );
 250
 251     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 252     {
 253         avi_stream_t *p_stream;
 254         p_stream = &p_sys->stream[i_stream];
 255         free( p_stream->p_bih );
 256         free( p_stream->p_wf );
 257     }
 258     free( p_sys->idx1.entry );
 259     free( p_sys );
 260 }
 261
 262 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
 263 {
 264     VLC_UNUSED(p_mux);
 265     bool *pb_bool;
 266     char **ppsz;
 267
 268    switch( i_query )
 269    {
 270        case MUX_CAN_ADD_STREAM_WHILE_MUXING:
 271            pb_bool = (bool*)va_arg( args, bool * );
 272            *pb_bool = false;
 273            return VLC_SUCCESS;
 274
 275        case MUX_GET_ADD_STREAM_WAIT:
 276            pb_bool = (bool*)va_arg( args, bool * );
 277            *pb_bool = true;
 278            return VLC_SUCCESS;
 279
 280        case MUX_GET_MIME:
 281            ppsz = (char**)va_arg( args, char ** );
 282            *ppsz = strdup( "video/avi" );
 283            return VLC_SUCCESS;
 284
 285         default:
 286             return VLC_EGENERIC;
 287    }
 288 }
 289
 290 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
 291 {
 292     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 293     avi_stream_t    *p_stream;
 294
 295     if( p_sys->i_streams >= 100 )
 296     {
 297         msg_Err( p_mux, "too many streams" );
 298         return VLC_EGENERIC;
 299     }
 300
 301     msg_Dbg( p_mux, "adding input" );
 302     p_input->p_sys = malloc( sizeof( int ) );
 303     if( !p_input->p_sys )
 304         return VLC_ENOMEM;
 305
 306     *((int*)p_input->p_sys) = p_sys->i_streams;
 307     p_stream = &p_sys->stream[p_sys->i_streams];
 308
 309     switch( p_input->p_fmt->i_cat )
 310     {
 311         case AUDIO_ES:
 312             p_stream->i_cat = AUDIO_ES;
 313             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 314             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 315             p_stream->fcc[2] = 'w';
 316             p_stream->fcc[3] = 'b';
 317
 318             p_stream->p_bih = NULL;
 319
 320             WAVEFORMATEX *p_wf  = malloc( sizeof( WAVEFORMATEX ) +
 321                                   p_input->p_fmt->i_extra );
 322             if( !p_wf )
 323             {
 324                 free( p_input->p_sys );
 325                 p_input->p_sys = NULL;
 326                 return VLC_ENOMEM;
 327             }
 328
 329             p_wf->cbSize = p_input->p_fmt->i_extra;
 330             if( p_wf->cbSize > 0 )
 331             {
 332                 memcpy( &p_wf[1],
 333                         p_input->p_fmt->p_extra,
 334                         p_input->p_fmt->i_extra );
 335             }
 336             p_wf->nChannels      = p_input->p_fmt->audio.i_channels;
 337             p_wf->nSamplesPerSec = p_input->p_fmt->audio.i_rate;
 338             p_wf->nBlockAlign    = p_input->p_fmt->audio.i_blockalign;
 339             p_wf->nAvgBytesPerSec= p_input->p_fmt->i_bitrate / 8;
 340             p_wf->wBitsPerSample = 0;
 341
 342             switch( p_input->p_fmt->i_codec )
 343             {
 344                 case VLC_CODEC_A52:
 345                     p_wf->wFormatTag = WAVE_FORMAT_A52;
 346                     p_wf->nBlockAlign= 1;
 347                     break;
 348                 case VLC_CODEC_MP3:
 349                     p_wf->wFormatTag = WAVE_FORMAT_MPEGLAYER3;
 350                     p_wf->nBlockAlign= 1;
 351                     break;
 352                 case VLC_CODEC_WMA1:
 353                     p_wf->wFormatTag = WAVE_FORMAT_WMA1;
 354                     break;
 355                 case VLC_CODEC_WMA2:
 356                     p_wf->wFormatTag = WAVE_FORMAT_WMA2;
 357                     break;
 358                 case VLC_CODEC_WMAP:
 359                     p_wf->wFormatTag = WAVE_FORMAT_WMAP;
 360                     break;
 361                 case VLC_CODEC_WMAL:
 362                     p_wf->wFormatTag = WAVE_FORMAT_WMAL;
 363                     break;
 364                     /* raw codec */
 365                 case VLC_CODEC_U8:
 366                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 367                     p_wf->nBlockAlign= p_wf->nChannels;
 368                     p_wf->wBitsPerSample = 8;
 369                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 370                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 371                     break;
 372                 case VLC_CODEC_S16L:
 373                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 374                     p_wf->nBlockAlign= 2 * p_wf->nChannels;
 375                     p_wf->wBitsPerSample = 16;
 376                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 377                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 378                     break;
 379                 case VLC_CODEC_S24L:
 380                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 381                     p_wf->nBlockAlign= 3 * p_wf->nChannels;
 382                     p_wf->wBitsPerSample = 24;
 383                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 384                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 385                     break;
 386                 case VLC_CODEC_S32L:
 387                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 388                     p_wf->nBlockAlign= 4 * p_wf->nChannels;
 389                     p_wf->wBitsPerSample = 32;
 390                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 391                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 392                     break;
 393                 default:
 394                     free( p_wf );
 395                     free( p_input->p_sys );
 396                     p_input->p_sys = NULL;
 397                     return VLC_EGENERIC;
 398             }
 399             p_stream->p_wf = p_wf;
 400             break;
 401         case VIDEO_ES:
 402             p_stream->i_cat = VIDEO_ES;
 403             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 404             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 405             p_stream->fcc[2] = 'd';
 406             p_stream->fcc[3] = 'c';
 407             if( p_sys->i_stream_video < 0 )
 408             {
 409                 p_sys->i_stream_video = p_sys->i_streams;
 410             }
 411             p_stream->p_wf  = NULL;
 412             VLC_BITMAPINFOHEADER *p_bih = malloc( sizeof( VLC_BITMAPINFOHEADER ) +
 413                                                  p_input->p_fmt->i_extra );
 414             if( !p_bih )
 415             {
 416                 free( p_input->p_sys );
 417                 p_input->p_sys = NULL;
 418                 return VLC_ENOMEM;
 419             }
 420
 421             p_bih->biSize  = sizeof( VLC_BITMAPINFOHEADER ) +
 422                              p_input->p_fmt->i_extra;
 423             if( p_input->p_fmt->i_extra > 0 )
 424             {
 425                 memcpy( &p_bih[1],
 426                         p_input->p_fmt->p_extra,
 427                         p_input->p_fmt->i_extra );
 428             }
 429             p_bih->biWidth = p_input->p_fmt->video.i_width;
 430             p_bih->biHeight= p_input->p_fmt->video.i_height;
 431             p_bih->biPlanes= 1;
 432             p_bih->biBitCount       = 24;
 433             p_bih->biSizeImage      = 0;
 434             p_bih->biXPelsPerMeter  = 0;
 435             p_bih->biYPelsPerMeter  = 0;
 436             p_bih->biClrUsed        = 0;
 437             p_bih->biClrImportant   = 0;
 438             switch( p_input->p_fmt->i_codec )
 439             {
 440                 case VLC_CODEC_MP4V:
 441                     p_bih->biCompression = VLC_FOURCC( 'X', 'V', 'I', 'D' );
 442                     break;
 443                 default:
 444                     p_bih->biCompression = p_input->p_fmt->i_original_fourcc ?: p_input->p_fmt->i_codec;
 445                     break;
 446             }
 447             p_stream->p_bih = p_bih;
 448             break;
 449         default:
 450             free( p_input->p_sys );
 451             p_input->p_sys = NULL;
 452             return( VLC_EGENERIC );
 453     }
 454     p_stream->i_totalsize = 0;
 455     p_stream->i_frames    = 0;
 456     p_stream->i_duration  = 0;
 457
 458     /* fixed later */
 459     p_stream->f_fps = 25;
 460     p_stream->i_bitrate = 128 * 1024;
 461
 462     p_sys->i_streams++;
 463     return( VLC_SUCCESS );
 464 }
 465
 466 static void DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
 467 {
 468     msg_Dbg( p_mux, "removing input" );
 469
 470     free( p_input->p_sys );
 471 }
 472
 473 static int Mux      ( sout_mux_t *p_mux )
 474 {
 475     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 476     avi_stream_t    *p_stream;
 477     int i_stream, i;
 478
 479     if( p_sys->b_write_header )
 480     {
 481         block_t *p_hdr;
 482
 483         msg_Dbg( p_mux, "writing header" );
 484
 485         p_hdr = avi_HeaderCreateRIFF( p_mux );
 486         sout_AccessOutWrite( p_mux->p_access, p_hdr );
 487
 488         p_sys->b_write_header = false;
 489     }
 490
 491     for( i = 0; i < p_mux->i_nb_inputs; i++ )
 492     {
 493         int i_count;
 494         block_fifo_t *p_fifo;
 495
 496         if (!p_mux->pp_inputs[i]->p_sys)
 497             continue;
 498
 499         i_stream = *((int*)p_mux->pp_inputs[i]->p_sys );
 500         p_stream = &p_sys->stream[i_stream];
 501
 502         p_fifo = p_mux->pp_inputs[i]->p_fifo;
 503         i_count = block_FifoCount(  p_fifo );
 504         while( i_count > 1 )
 505         {
 506             avi_idx1_entry_t *p_idx;
 507             block_t *p_data;
 508
 509             p_data = block_FifoGet( p_fifo );
 510             if( block_FifoCount( p_fifo ) > 0 )
 511             {
 512                 block_t *p_next = block_FifoShow( p_fifo );
 513                 p_data->i_length = p_next->i_dts - p_data->i_dts;
 514             }
 515
 516
 517             if( p_stream->i_frames == 0 &&p_stream->i_cat == VIDEO_ES )
 518             {
 519                /* Add header present at the end of BITMAP info header
 520                   to first frame in case of XVID */
 521                if( p_stream->p_bih->biCompression
 522                                == VLC_FOURCC( 'X', 'V', 'I', 'D' ) )
 523                {
 524                    int i_header_length =
 525                        p_stream->p_bih->biSize - sizeof(VLC_BITMAPINFOHEADER);
 526                    p_data = block_Realloc( p_data,
 527                                    i_header_length, p_data->i_buffer );
 528                    if( !p_data)
 529                        return VLC_ENOMEM;
 530                    memcpy(p_data->p_buffer,&p_stream->p_bih[1], i_header_length);
 531                }
 532             }
 533
 534             p_stream->i_frames++;
 535             if( p_data->i_length < 0 )
 536             {
 537                 msg_Warn( p_mux, "argg length < 0 l" );
 538                 block_Release( p_data );
 539                 i_count--;
 540                 continue;
 541             }
 542             p_stream->i_duration  += p_data->i_length;
 543             p_stream->i_totalsize += p_data->i_buffer;
 544
 545             /* add idx1 entry for this frame */
 546             p_idx = &p_sys->idx1.entry[p_sys->idx1.i_entry_count];
 547             memcpy( p_idx->fcc, p_stream->fcc, 4 );
 548             p_idx->i_flags = 0;
 549             if( ( p_data->i_flags & BLOCK_FLAG_TYPE_MASK ) == 0 || ( p_data->i_flags & BLOCK_FLAG_TYPE_I ) )
 550                 p_idx->i_flags = AVIIF_KEYFRAME;
 551             p_idx->i_pos   = p_sys->i_movi_size + 4;
 552             p_idx->i_length= p_data->i_buffer;
 553             p_sys->idx1.i_entry_count++;
 554             if( p_sys->idx1.i_entry_count >= p_sys->idx1.i_entry_max )
 555             {
 556                 p_sys->idx1.i_entry_max += 10000;
 557                 p_sys->idx1.entry = xrealloc( p_sys->idx1.entry,
 558                        p_sys->idx1.i_entry_max * sizeof( avi_idx1_entry_t ) );
 559             }
 560
 561             p_data = block_Realloc( p_data, 8, p_data->i_buffer );
 562             if( p_data )
 563             {
 564                 SetFCC( p_data->p_buffer, p_stream->fcc );
 565                 SetDWLE( p_data->p_buffer + 4, p_data->i_buffer - 8 );
 566
 567                 if( p_data->i_buffer & 0x01 )
 568                 {
 569                     p_data = block_Realloc( p_data, 0, p_data->i_buffer + 1 );
 570                     p_data->p_buffer[ p_data->i_buffer - 1 ] = '\0';
 571                 }
 572
 573                 p_sys->i_movi_size += p_data->i_buffer;
 574                 sout_AccessOutWrite( p_mux->p_access, p_data );
 575             }
 576
 577             i_count--;
 578         }
 579
 580     }
 581     return( 0 );
 582 }
 583
 584 /****************************************************************************
 585  ****************************************************************************
 586  **
 587  ** avi header generation
 588  **
 589  ****************************************************************************
 590  ****************************************************************************/
 591 #define AVI_BOX_ENTER( fcc ) \
 592     int i_datasize_offset; \
 593     bo_add_fourcc( p_bo, fcc ); \
 594     i_datasize_offset = p_bo->b->i_buffer; \
 595     bo_add_32le( p_bo, 0 )
 596
 597 #define AVI_BOX_ENTER_LIST( fcc ) \
 598     AVI_BOX_ENTER( "LIST" ); \
 599     bo_add_fourcc( p_bo, fcc )
 600
 601 #define AVI_BOX_EXIT( i_err ) \
 602     if( p_bo->b->i_buffer&0x01 ) bo_add_8( p_bo, 0 ); \
 603     bo_set_32le( p_bo, i_datasize_offset, p_bo->b->i_buffer - i_datasize_offset - 4 ); \
 604     return( i_err );
 605
 606 static int avi_HeaderAdd_avih( sout_mux_t *p_mux,
 607                                bo_t *p_bo )
 608 {
 609     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 610     avi_stream_t    *p_video = NULL;
 611     int         i_stream;
 612     uint32_t    i_microsecperframe;
 613     int         i_maxbytespersec;
 614     int         i_totalframes;
 615     AVI_BOX_ENTER( "avih" );
 616
 617     if( p_sys->i_stream_video >= 0 )
 618     {
 619         p_video = &p_sys->stream[p_sys->i_stream_video];
 620         if( p_video->i_frames <= 0 )
 621         {
 622         //    p_video = NULL;
 623         }
 624     }
 625
 626     if( p_video )
 627     {
 628         i_microsecperframe =
 629             (uint32_t)( (float)1000000 /
 630                         (float)p_sys->stream[p_sys->i_stream_video].f_fps );
 631         i_totalframes = p_sys->stream[p_sys->i_stream_video].i_frames;
 632     }
 633     else
 634     {
 635         msg_Warn( p_mux, "avi file without video track isn't a good idea..." );
 636         i_microsecperframe = 0;
 637         i_totalframes = 0;
 638     }
 639
 640     for( i_stream = 0,i_maxbytespersec = 0; i_stream < p_sys->i_streams; i_stream++ )
 641     {
 642         if( p_sys->stream[i_stream].i_duration > 0 )
 643         {
 644             i_maxbytespersec +=
 645                 p_sys->stream[i_stream].i_totalsize /
 646                 p_sys->stream[i_stream].i_duration;
 647         }
 648     }
 649
 650     bo_add_32le( p_bo, i_microsecperframe );
 651     bo_add_32le( p_bo, i_maxbytespersec );
 652     bo_add_32le( p_bo, 0 );                   /* padding */
 653     bo_add_32le( p_bo, AVIF_TRUSTCKTYPE |
 654                        AVIF_HASINDEX |
 655                        AVIF_ISINTERLEAVED );  /* flags */
 656     bo_add_32le( p_bo, i_totalframes );
 657     bo_add_32le( p_bo, 0 );                   /* initial frame */
 658     bo_add_32le( p_bo, p_sys->i_streams );    /* streams count */
 659     bo_add_32le( p_bo, 1024 * 1024 );         /* suggested buffer size */
 660     if( p_video )
 661     {
 662         bo_add_32le( p_bo, p_video->p_bih->biWidth );
 663         bo_add_32le( p_bo, p_video->p_bih->biHeight );
 664     }
 665     else
 666     {
 667         bo_add_32le( p_bo, 0 );
 668         bo_add_32le( p_bo, 0 );
 669     }
 670     bo_add_32le( p_bo, 0 );                   /* ???? */
 671     bo_add_32le( p_bo, 0 );                   /* ???? */
 672     bo_add_32le( p_bo, 0 );                   /* ???? */
 673     bo_add_32le( p_bo, 0 );                   /* ???? */
 674
 675     AVI_BOX_EXIT( 0 );
 676 }
 677 static int avi_HeaderAdd_strh( bo_t *p_bo, avi_stream_t *p_stream )
 678 {
 679     AVI_BOX_ENTER( "strh" );
 680
 681     switch( p_stream->i_cat )
 682     {
 683         case VIDEO_ES:
 684             {
 685                 bo_add_fourcc( p_bo, "vids" );
 686                 bo_add_32be( p_bo, p_stream->p_bih->biCompression );
 687                 bo_add_32le( p_bo, 0 );   /* flags */
 688                 bo_add_16le(  p_bo, 0 );   /* priority */
 689                 bo_add_16le(  p_bo, 0 );   /* langage */
 690                 bo_add_32le( p_bo, 0 );   /* initial frame */
 691                 bo_add_32le( p_bo, 1000 );/* scale */
 692                 bo_add_32le( p_bo, (uint32_t)( 1000 * p_stream->f_fps ));
 693                 bo_add_32le( p_bo, 0 );   /* start */
 694                 bo_add_32le( p_bo, p_stream->i_frames );
 695                 bo_add_32le( p_bo, 1024 * 1024 );
 696                 bo_add_32le( p_bo, -1 );  /* quality */
 697                 bo_add_32le( p_bo, 0 );   /* samplesize */
 698                 bo_add_16le(  p_bo, 0 );   /* ??? */
 699                 bo_add_16le(  p_bo, 0 );   /* ??? */
 700                 bo_add_16le(  p_bo, p_stream->p_bih->biWidth );
 701                 bo_add_16le(  p_bo, p_stream->p_bih->biHeight );
 702             }
 703             break;
 704         case AUDIO_ES:
 705             {
 706                 int i_rate, i_scale, i_samplesize;
 707
 708                 i_samplesize = p_stream->p_wf->nBlockAlign;
 709                 if( i_samplesize > 1 )
 710                 {
 711                     i_scale = i_samplesize;
 712                     i_rate = /*i_scale **/ p_stream->i_bitrate / 8;
 713                 }
 714                 else
 715                 {
 716                     i_samplesize = 1;
 717                     i_scale = 1000;
 718                     i_rate = 1000 * p_stream->i_bitrate / 8;
 719                 }
 720                 bo_add_fourcc( p_bo, "auds" );
 721                 bo_add_32le( p_bo, 0 );   /* tag */
 722                 bo_add_32le( p_bo, 0 );   /* flags */
 723                 bo_add_16le(  p_bo, 0 );   /* priority */
 724                 bo_add_16le(  p_bo, 0 );   /* langage */
 725                 bo_add_32le( p_bo, 0 );   /* initial frame */
 726                 bo_add_32le( p_bo, i_scale );/* scale */
 727                 bo_add_32le( p_bo, i_rate );
 728                 bo_add_32le( p_bo, 0 );   /* start */
 729                 bo_add_32le( p_bo, p_stream->i_frames );
 730                 bo_add_32le( p_bo, 10 * 1024 );
 731                 bo_add_32le( p_bo, -1 );  /* quality */
 732                 bo_add_32le( p_bo, i_samplesize );
 733                 bo_add_16le(  p_bo, 0 );   /* ??? */
 734                 bo_add_16le(  p_bo, 0 );   /* ??? */
 735                 bo_add_16le(  p_bo, 0 );
 736                 bo_add_16le(  p_bo, 0 );
 737             }
 738             break;
 739     }
 740
 741     AVI_BOX_EXIT( 0 );
 742 }
 743
 744 static int avi_HeaderAdd_strf( bo_t *p_bo, avi_stream_t *p_stream )
 745 {
 746     AVI_BOX_ENTER( "strf" );
 747
 748     switch( p_stream->i_cat )
 749     {
 750         case AUDIO_ES:
 751             bo_add_16le( p_bo, p_stream->p_wf->wFormatTag );
 752             bo_add_16le( p_bo, p_stream->p_wf->nChannels );
 753             bo_add_32le( p_bo, p_stream->p_wf->nSamplesPerSec );
 754             bo_add_32le( p_bo, p_stream->p_wf->nAvgBytesPerSec );
 755             bo_add_16le( p_bo, p_stream->p_wf->nBlockAlign );
 756             bo_add_16le( p_bo, p_stream->p_wf->wBitsPerSample );
 757             bo_add_16le( p_bo, p_stream->p_wf->cbSize );
 758             bo_add_mem( p_bo, p_stream->p_wf->cbSize, (uint8_t*)&p_stream->p_wf[1] );
 759             break;
 760         case VIDEO_ES:
 761             bo_add_32le( p_bo, p_stream->p_bih->biSize );
 762             bo_add_32le( p_bo, p_stream->p_bih->biWidth );
 763             bo_add_32le( p_bo, p_stream->p_bih->biHeight );
 764             bo_add_16le( p_bo, p_stream->p_bih->biPlanes );
 765             bo_add_16le( p_bo, p_stream->p_bih->biBitCount );
 766             if( VLC_FOURCC( 0, 0, 0, 1 ) == 0x00000001 )
 767             {
 768                 bo_add_32be( p_bo, p_stream->p_bih->biCompression );
 769             }
 770             else
 771             {
 772                 bo_add_32le( p_bo, p_stream->p_bih->biCompression );
 773             }
 774             bo_add_32le( p_bo, p_stream->p_bih->biSizeImage );
 775             bo_add_32le( p_bo, p_stream->p_bih->biXPelsPerMeter );
 776             bo_add_32le( p_bo, p_stream->p_bih->biYPelsPerMeter );
 777             bo_add_32le( p_bo, p_stream->p_bih->biClrUsed );
 778             bo_add_32le( p_bo, p_stream->p_bih->biClrImportant );
 779             bo_add_mem( p_bo,
 780                         p_stream->p_bih->biSize - sizeof( VLC_BITMAPINFOHEADER ),
 781                         (uint8_t*)&p_stream->p_bih[1] );
 782             break;
 783     }
 784
 785     AVI_BOX_EXIT( 0 );
 786 }
 787
 788 static int avi_HeaderAdd_strl( bo_t *p_bo, avi_stream_t *p_stream )
 789 {
 790     AVI_BOX_ENTER_LIST( "strl" );
 791
 792     avi_HeaderAdd_strh( p_bo, p_stream );
 793     avi_HeaderAdd_strf( p_bo, p_stream );
 794
 795     AVI_BOX_EXIT( 0 );
 796 }
 797
 798 static int avi_HeaderAdd_meta( bo_t *p_bo, const char psz_meta[4],
 799                                const char *psz_data )
 800 {
 801     if ( psz_data == NULL ) return 1;
 802     const char *psz = psz_data;
 803     AVI_BOX_ENTER( psz_meta );
 804     while (*psz) bo_add_8( p_bo, *psz++ );
 805     bo_add_8( p_bo, 0 );
 806     AVI_BOX_EXIT( 0 );
 807 }
 808
 809 static int avi_HeaderAdd_INFO( sout_mux_t *p_mux, bo_t *p_bo )
 810 {
 811     char *psz;
 812
 813 #define APPLY_META(var, fourcc) \
 814     psz = var_InheritString( p_mux, SOUT_CFG_PREFIX var );\
 815     if ( psz )\
 816     {\
 817         avi_HeaderAdd_meta( p_bo, fourcc, psz );\
 818         free( psz );\
 819     }
 820
 821     AVI_BOX_ENTER_LIST( "INFO" );
 822
 823     APPLY_META( "artist",   "IART")
 824     APPLY_META( "comment",  "ICMT")
 825     APPLY_META( "copyright","ICOP")
 826     APPLY_META( "date",     "ICRD")
 827     APPLY_META( "genre",    "IGNR")
 828     APPLY_META( "name",     "INAM")
 829     APPLY_META( "keywords", "IKEY")
 830     APPLY_META( "subject",  "ISBJ")
 831     APPLY_META( "encoder",  "ISFT")
 832     /* Some are missing, but are they really useful ?? */
 833
 834 #undef APPLY_META
 835
 836     AVI_BOX_EXIT( 0 );
 837 }
 838
 839 static block_t *avi_HeaderCreateRIFF( sout_mux_t *p_mux )
 840 {
 841     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 842     int                 i_stream;
 843     int                 i_junk;
 844     bo_t                bo;
 845
 846     struct
 847     {
 848         int i_riffsize;
 849         int i_hdrllistsize;
 850         int i_hdrldatastart;
 851     } offsets;
 852
 853     bo_init( &bo, HDR_BASE_SIZE );
 854
 855     bo_add_fourcc( &bo, "RIFF" );
 856     offsets.i_riffsize = bo.b->i_buffer;
 857     bo_add_32le( &bo, 0xEFBEADDE );
 858     bo_add_fourcc( &bo, "AVI " );
 859
 860     bo_add_fourcc( &bo, "LIST" );
 861     /* HDRL List size should exclude following data in HDR buffer
 862      *  -12 (RIFF, RIFF size, 'AVI ' tag),
 863      *  - 8 (hdr1 LIST tag and its size)
 864      *  - 12 (movi LIST tag, size, 'movi' listType )
 865      */
 866     offsets.i_hdrllistsize = bo.b->i_buffer;
 867     bo_add_32le( &bo, 0xEFBEADDE );
 868     bo_add_fourcc( &bo, "hdrl" );
 869     offsets.i_hdrldatastart = bo.b->i_buffer;
 870
 871     avi_HeaderAdd_avih( p_mux, &bo );
 872     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 873     {
 874         avi_HeaderAdd_strl( &bo, &p_sys->stream[i_stream] );
 875     }
 876
 877     /* align on 16 bytes */
 878     int i_align = ( ( bo.b->i_buffer + 12 + 0xE ) & ~ 0xF );
 879     i_junk = i_align - bo.b->i_buffer;
 880     bo_add_fourcc( &bo, "JUNK" );
 881     bo_add_32le( &bo, i_junk );
 882     for( int i=0; i< i_junk; i++ )
 883     {
 884         bo_add_8( &bo, 0 );
 885     }
 886
 887     /* Now set hdrl size */
 888     bo_set_32le( &bo, offsets.i_hdrllistsize,
 889                  bo.b->i_buffer - offsets.i_hdrldatastart );
 890
 891     avi_HeaderAdd_INFO( p_mux, &bo );
 892
 893     bo_add_fourcc( &bo, "LIST" );
 894     bo_add_32le( &bo, p_sys->i_movi_size + 4 );
 895     bo_add_fourcc( &bo, "movi" );
 896
 897     /* Now set RIFF size */
 898     bo_set_32le( &bo, offsets.i_riffsize, bo.b->i_buffer - 8
 899                  + p_sys->i_movi_size + p_sys->i_idx1_size );
 900
 901     return( bo.b );
 902 }
 903
 904 static block_t * avi_HeaderCreateidx1( sout_mux_t *p_mux )
 905 {
 906     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 907     uint32_t            i_idx1_size;
 908     bo_t                bo;
 909
 910     i_idx1_size = 16 * p_sys->idx1.i_entry_count + 8;
 911
 912     bo_init( &bo, i_idx1_size );
 913     memset( bo.b->p_buffer, 0, i_idx1_size);
 914
 915     bo_add_fourcc( &bo, "idx1" );
 916     bo_add_32le( &bo, i_idx1_size - 8);
 917
 918     for( unsigned i = 0; i < p_sys->idx1.i_entry_count; i++ )
 919     {
 920         bo_add_fourcc( &bo, p_sys->idx1.entry[i].fcc );
 921         bo_add_32le( &bo, p_sys->idx1.entry[i].i_flags );
 922         bo_add_32le( &bo, p_sys->idx1.entry[i].i_pos );
 923         bo_add_32le( &bo, p_sys->idx1.entry[i].i_length );
 924     }
 925
 926     return( bo.b );
 927 }